BE351843A - - Google Patents

Info

Publication number
BE351843A
BE351843A BE351843DA BE351843A BE 351843 A BE351843 A BE 351843A BE 351843D A BE351843D A BE 351843DA BE 351843 A BE351843 A BE 351843A
Authority
BE
Belgium
Prior art keywords
circuit
lamp
monitoring station
central monitoring
room
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE351843A publication Critical patent/BE351843A/fr

Links

Classifications

    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C1/00Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
    • G07C1/20Checking timed patrols, e.g. of watchman

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
BE351843D BE351843A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
BE351843A true BE351843A (enrdf_load_stackoverflow)

Family

ID=26709

Family Applications (1)

Application Number Title Priority Date Filing Date
BE351843D BE351843A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
BE (1) BE351843A (enrdf_load_stackoverflow)

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